Hi Matt I add monitor from options only.
Pleas note that for default KSP monitor a norm of preconditioned residual is printed only once. Problem exists when I monitor true residuals. Regards, Lukasz On 27 Oct 2009, at 23:23, Matthew Knepley <knepley at gmail.com> wrote: > It is possible to add the monitor twice. Are you sure this did not > happen? > > Thanks, > > Matt > > On Tue, Oct 27, 2009 at 6:19 PM, Lukasz Kaczmarczyk <likask at > civil.gla.ac.uk > > wrote: > Hello, > > I have noticed minor problem, potentially bug. For nonlinear > analysis with SNES and option -ksp_monitor_true_residual I get > 0 Norm Res_strain 9.36e-12 Norm Res_stress 1.43e-05 Internal its 1 > 0 SNES Function norm 1.428489691212e-05 > 0 KSP preconditioned resid norm 7.213823259362e-04 true resid > norm 1.428489691212e-05 ||Ae||/||Ax|| 1.000000000000e+00 > 0 KSP preconditioned resid norm 7.213823259362e-04 true resid > norm 1.428489691212e-05 ||Ae||/||Ax|| 1.000000000000e+00 > 1 KSP preconditioned resid norm 4.903423697449e-04 true resid > norm 9.339595309685e-06 ||Ae||/||Ax|| 6.538090801174e-01 > 1 KSP preconditioned resid norm 4.903423697449e-04 true resid > norm 9.339595309685e-06 ||Ae||/||Ax|| 6.538090801174e-01 > > It look that function KSPMonitorTrueResidualNorm is evaluated twice, > whereas for default KSP monitor only once. I use petsc-3.0.0-p7. > > Kind regards, > Lukasz > > > > -- > What most experimenters take for granted before they begin their > experiments is infinitely more interesting than any results to which > their experiments lead. > -- Norbert Wiener -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20091028/43a9f5f1/attachment.htm>
